1 files changed, 101 insertions, 0 deletions
diff --git a/trunk/avahi-core/cache.h b/trunk/avahi-core/cache.h
new file mode 100644
index 0000000..edf9fa5
--- /dev/null
+++ b/trunk/avahi-core/cache.h
@@ -0,0 +1,101 @@
+#ifndef foocachehfoo
+#define foocachehfoo
+
+/* $Id$ */
+
+/***
+  This file is part of avahi.
+ 
+  avahi is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as
+  published by the Free Software Foundation; either version 2.1 of the
+  License, or (at your option) any later version.
+ 
+  avahi is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+  Public License for more details.
+ 
+  You should have received a copy of the GNU Lesser General Public
+  License along with avahi; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+typedef struct AvahiCache AvahiCache;
+
+#include <avahi-common/llist.h>
+#include "prioq.h"
+#include "internal.h"
+#include "timeeventq.h"
+#include "hashmap.h"
+
+typedef enum {
+    AVAHI_CACHE_VALID,
+    AVAHI_CACHE_EXPIRY1,
+    AVAHI_CACHE_EXPIRY2,
+    AVAHI_CACHE_EXPIRY3,
+    AVAHI_CACHE_EXPIRY_FINAL,
+    AVAHI_CACHE_POOF,       /* Passive observation of failure */
+    AVAHI_CACHE_POOF_FINAL,
+    AVAHI_CACHE_GOODBYE_FINAL,
+    AVAHI_CACHE_REPLACE_FINAL
+} AvahiCacheEntryState;
+
+typedef struct AvahiCacheEntry AvahiCacheEntry;
+
+struct AvahiCacheEntry {
+    AvahiCache *cache;
+    AvahiRecord *record;
+    struct timeval timestamp;
+    struct timeval expiry;
+    int cache_flush;
+    
+    AvahiAddress origin;
+
+    AvahiCacheEntryState state;
+    AvahiTimeEvent *time_event;
+
+    AvahiAddress poof_address;
+
+    AVAHI_LLIST_FIELDS(AvahiCacheEntry, by_key);
+    AVAHI_LLIST_FIELDS(AvahiCacheEntry, entry);
+};
+
+struct AvahiCache {
+    AvahiServer *server;
+    
+    AvahiInterface *interface;
+    
+    AvahiHashmap *hashmap;
+
+    AVAHI_LLIST_HEAD(AvahiCacheEntry, entries);
+
+    unsigned n_entries;
+
+    int last_rand;
+    time_t last_rand_timestamp;
+};
+
+AvahiCache *avahi_cache_new(AvahiServer *server, AvahiInterface *interface);
+void avahi_cache_free(AvahiCache *c);
+
+void avahi_cache_update(AvahiCache *c, AvahiRecord *r, int cache_flush, const AvahiAddress *a);
+
+int avahi_cache_dump(AvahiCache *c, AvahiDumpCallback callback, void* userdata);
+
+typedef void* AvahiCacheWalkCallback(AvahiCache *c, AvahiKey *pattern, AvahiCacheEntry *e, void* userdata);
+void* avahi_cache_walk(AvahiCache *c, AvahiKey *pattern, AvahiCacheWalkCallback cb, void* userdata);
+
+int avahi_cache_entry_half_ttl(AvahiCache *c, AvahiCacheEntry *e);
+
+/** Start the "Passive observation of Failure" algorithm for all
+ * records of the specified key. The specified address is  */
+void avahi_cache_start_poof(AvahiCache *c, AvahiKey *key, const AvahiAddress *a);
+
+/* Stop a previously started POOF algorithm for a record. (Used for response suppresions records */    
+void avahi_cache_stop_poof(AvahiCache *c, AvahiRecord *record, const AvahiAddress *a);
+
+void avahi_cache_flush(AvahiCache *c);
+
+#endif